protected void RaiseDragEnter(RangeSegmentEnterEventArgs args)
{
if (SegmentEnter != null)
{
SegmentEnter(this, args);
}
}
/// <summary>
/// Updates the drag spliter low.
/// </summary>
/// <param name="rect">The rect.</param>
protected virtual void UpdateDragSpliterLow(Rectangle rect)
{
int index = Segments.IndexOf(rect.Tag as ChartSegment);
var args = new RangeSegmentEnterEventArgs()
{
XValue = GetActualXValue(index),
SegmentIndex = index,
CanDrag = true,
HighValue = HighValues[index],
LowValue = LowValues[index]
};
RaiseDragEnter(args);
if (!args.CanDrag)
{
return;
}
if (DragSpliterLow == null)
{
DragSpliterLow = new ContentControl();
SeriesPanel.Children.Add(DragSpliterLow);
if (IsActualTransposed)
{
DragSpliterLow.Template = ChartDictionaries.GenericCommonDictionary["DragSpliterLeft"] as ControlTemplate;
}
else
{
DragSpliterLow.Template = ChartDictionaries.GenericCommonDictionary["DragSpliterTop"] as ControlTemplate;
}
}
double canvasLeft, canvasTop, spliterHeight, spliterWidth, margin;
if (IsActualTransposed)
{
canvasTop = Canvas.GetTop(rect);
double height = rect.Height;
margin = height / 3;
spliterHeight = height - margin * 2;
DragSpliterLow.Margin = new Thickness(0, margin, 0, margin);
canvasLeft = Canvas.GetLeft(rect) + margin / 3;
spliterWidth = spliterHeight / 5;
}
else
{
double bottom = Canvas.GetTop(rect) + rect.Height;
double width = rect.Width;
margin = width / 3;
spliterWidth = width - margin * 2;
DragSpliterLow.Margin = new Thickness(margin, 0, margin, 0);
canvasLeft = Canvas.GetLeft(rect);
canvasTop = bottom - 7;
spliterHeight = spliterWidth / 5;
}
DragSpliterLow.SetValue(Canvas.LeftProperty, canvasLeft);
DragSpliterLow.SetValue(Canvas.TopProperty, canvasTop);
DragSpliterLow.Height = spliterHeight;
DragSpliterLow.Width = spliterWidth;
}